公开(公告)号：US20250158769A1

公开(公告)日：2025-05-15

申请号：US18939453

申请日：2024-11-06

Applicant: MEDIATEK INC.

Inventor： Ming-Hsiang Tseng ,  Cheng-En Hsieh ,  Hao-Chih Yu ,  Tzu-Hao Yu

IPC: H04L5/00 ,  H04B7/06

Abstract: A method for reducing sounding overhead by shortening TB-PPDU duration for trigger-based implicit feedback and associated apparatus are provided, where a non-AP STA device is wirelessly linking to an AP device, and a number of sounding dimension of the non-AP STA device is less than a maximum number of spatial streams of the AP device. The method may include: transmitting a first frame regarding TB-sounding as well as a trigger frame, with at least one field of at least one frame among the first frame and the trigger frame being set to shorten the TB-PPDU duration; and receiving a sounding feedback having the TB-PPDU duration to be the trigger-based implicit feedback, for use of generating a beamforming steering matrix for transmission beamforming, wherein the at least one field is set to shorten a time for receiving a useless part within the sounding feedback, for reducing the sounding overhead.

公开(公告)号：US11817974B2

公开(公告)日：2023-11-14

申请号：US17820282

申请日：2022-08-17

Applicant: MEDIATEK INC.

Inventor： Hao-Chih Yu ,  Pu-Hsuan Lin ,  Yu-Ting Su

IPC: H04L25/02 ,  H04L5/00 ,  H04L1/1607 ,  H04W72/044 ,  H04W72/23 ,  H04B7/0452

CPC classification number: H04L25/0228 ,  H04L1/1607 ,  H04L5/0048 ,  H04W72/046 ,  H04W72/23 ,  H04B7/0452

Abstract: A method for sounding-interval adaptation using link quality for use in an apparatus is provided. The apparatus includes a sounding transceiver. The method includes the following steps: periodically transmitting a sounding packet to a beamformee through a downlink channel from the apparatus to the beamformee according to a first sounding interval; in response to the sounding transceiver receiving a data packet or a report packet from the beamformee, obtaining a current first channel profile from the received data packet or the received report packet; and adaptively adjusting the first sounding interval according to a first mobility indicator which is calculated according to the current first channel profile and the previous first channel profile.

公开(公告)号：US20240291524A1

公开(公告)日：2024-08-29

申请号：US18398160

申请日：2023-12-28

Applicant: MediaTek Inc.

Inventor： Cheng-En Hsieh ,  Ming-Hsiang Tseng ,  Kang-Li Wu ,  Shih-Wei Lin ,  Hao-Chih Yu ,  Ching-Yu Kuo ,  Hung-Tao Hsieh

IPC: H04B7/0417

CPC classification number: H04B7/0421

Abstract: Techniques pertaining to trigger-based (TB) implicit feedback for implicit beamforming in wireless communications are described. An apparatus (e.g., an access point (AP)) triggers each of one or more stations (STAs) to transmit a respective feedback. The apparatus estimates a respective steering matrix with respect to each of the one or more STAs based on the respective feedback. The apparatus then transmits a respective steered data to each of the one or more STAs based on the respective steering matrix.

公开(公告)号：US20240397431A1

公开(公告)日：2024-11-28

申请号：US18673303

申请日：2024-05-23

Applicant: MEDIATEK INC.

Inventor： I-Yin Yu ,  Kuan-Chih Kuo ,  Ching-Yu Kuo ,  Hao-Chih Yu ,  Wei-I Chiang

IPC: H04W52/14 ,  H04L1/00 ,  H04W52/36

Abstract: A method for performing transmission power control of a wireless transceiver device in wireless communications system and associated apparatus are provided. The method may include: obtaining at least one indicator regarding a current channel, for channel detection of the current channel; detecting the current channel based on the at least one indicator to generate at least one channel detection result, wherein when one of the at least one channel detection result indicates a current channel model of the current channel, the current channel model is one of multiple predetermined channel models; and determining at least one transmission power value according to the at least one channel detection result, for performing packet transmission with the at least one transmission power value.

公开(公告)号：US11463282B2

公开(公告)日：2022-10-04

申请号：US17215742

申请日：2021-03-29

Applicant: MEDIATEK INC.

Inventor： Hao-Chih Yu ,  Pu-Hsuan Lin ,  Yu-Ting Su

IPC: H04B7/0452 ,  H04L25/02 ,  H04L5/00 ,  H04L1/16 ,  H04W72/04

Abstract: A method for sounding-interval adaptation using link quality for use in an apparatus is provided. The apparatus includes a sounding transceiver. The method includes the following steps: periodically transmitting a sounding packet to a beamformee through a downlink channel from the apparatus to the beamformee using a first sounding interval; in response to the sound transceiver successfully receiving a report packet from the beamformee to respond to the sounding packet, obtaining a current first channel profile from the report packet, and calculating a first LQ (link quality) value of the beamformee using the current first channel profile and a previous first channel profile; searching an LQ-mapping table using the first LQ value to obtain a second sounding interval; and adaptively adjusting the first sounding interval using the second sounding interval in response to a comparison result of the current first channel profile and the previous first channel profile.